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Iiscore.dll – Pre Service Pack 3 Revision History for Windows Vista SP2, Windows Server 2008 SP2 and Windows Small Business Server 2008 (SBS 2008)

Iiscore.dll – Pre Service Pack 3 Revision History for Windows Vista SP2, Windows Server 2008 SP2 and Windows Small Business Server 2008 (SBS 2008)

17-Mar-2011 – 7.0.6002.22615 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/2522807 – FIX: W3wp.exe process may crash intermittently when an application handles requests for extensionless URLs in IIS 7.0 or in IIS 7.5

21-Apr-2010 – 7.0.6002.22388 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/982666 – MS10-040: Vulnerability in Internet Information Services could allow remote code execution

26-Feb-2010 – 7.0.6002.22350 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/980368 – A update is available that enables certain IIS 7.0 or IIS 7.5 handlers to handle requests whose URLs do not end with a period

20-Feb-2010 – 7.0.6002.22343 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/973917 – Description of the update that implements Extended Protection for Authentication in Internet Information Services (IIS)

20-Feb-2010 – 7.0.6002.18210 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/982666 – MS10-040: Vulnerability in Internet Information Services could allow remote code execution

20-Feb-2010 – 7.0.6002.18210 – Iiscore.dll – x86/x64 – http://support.microsoft.com/kb/973917 – Description of the update that implements Extended Protection for Authentication in Internet Information Services (IIS)

HTTP and HTTPS requests or traffic to a Windows Vista, Windows 7, Windows Server 2008, SBS 2008, Windows Server 2008 R2 or SBS 2011 machine may exhibit increased latency if the connection is through a network load balancer

If you utilise Microsoft Internet Information Services IIS or an application that uses the System.Net.HttpListener class is installed or running on one the operating systems below, and you have a Network Load Balancer then you may find that Increased latency occurs on HTTP and HTTPS requests and traffic.

This issue occurs because the HTTP and HTTPS requests from clients can include zero length data in the SSL records, certain server-side variables do not update correctly in this instance and Http.sys leaves the connection in the CLOSE_WAIT state.  This intern exhausts the open connection limit can introduce latency, timeouts and connection problems.

Affected Operating Systems:

Microsoft Windows Vista

Microsoft Windows 7

Microsoft Windows Server 2008

Microsoft Small Business Server 2008 – SBS 2008

Microsoft Windows Server 2008 R2

Microsoft Small Business Server 2011 – SBS 2011

The Microsoft Knowledge Base Article KB 2634328 includes further information on this issue and provides an updated version of Http.sys that corrects the issue http://support.microsoft.com/kb/2634328

[RESOLVED] Windows Fax and Scan – Invalid procedure call or argument URL: res://ieframe.dll/preview.js

When you try to use Windows Fax and Scan to send a fax message with content in the body section of the fax you may get an error similar to the following example:

Script Error

Line: 2107

Char: 1

Error: Invalid procedure call or argument

Code: 0

URL: res://ieframe.dll/preview.js

This seems to start occurring after Internet Explorer 9 is installed and currently it seems that the only workaround is to uninstall Internet Explorer 9 or not enter text into the body section of the fax.

Following on from our Microsoft PSS case we have been given two different solutions to this issue, the first is to apply the latest Cumulative Security Update for Internet Explorer.  This can be obtained via Microsoft Update or Windows Update and may have already been installed automatically.  You can find further information here MS11-099: Cumulative Security Update for Internet Explorer: December 13, 2011 http://support.microsoft.com/kb/2618444

Another possible fix for this issue is to apply the hotfix mentioned in Microsoft KB 2647169 http://support.microsoft.com/kb/2647169 this applies to Windows 7, Windows Server 2008 R2 and Microsoft Windows Small Business Server 2011 (SBS 2011).

A case is open with Microsoft PSS regarding this issue and once I have more permanent fix I will post it here.

Here is the official stance from Microsoft on this issue http://support.microsoft.com/kb/2629557